package com.itheima.reggie.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.itheima.reggie.common.JacksonObjectMapper;
import com.itheima.reggie.interceptor.LoginCheckInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;
import java.util.List;

@Configuration      //设置为配置类
@EnableSwagger2//开启Swagger
@EnableKnife4j//开启Knife4j
public class ReggieWebMvcConfig implements WebMvcConfigurer {

    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;

    //静态资源访问设置
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/backend/**")  //设置输入访问的url路径
                .addResourceLocations("classpath:/backend/");   //设置实际访问的路径地址

        //文档需要映射的静态资源
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    //配置拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //定义放行路径
        ArrayList<String> urls = new ArrayList<>();
        urls.add("/backend/**");//管理系统静态资源
        urls.add("/error");//错误请求
        urls.add("/employee/login");//管理系统登录请求

        //文档需要释放的静态资源
        urls.add("/doc.html");
        urls.add("/webjars/**");
        urls.add("/swagger-resources");
        urls.add("/v2/api-docs");


        registry.addInterceptor(loginCheckInterceptor)      //设置为自己写的拦截器
                .addPathPatterns("/**")     //设置为拦截所有
                .excludePathPatterns(urls); //设置放行的url
    }

    //扩展mvc框架的消息转换器
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0, messageConverter);
    }

    @Bean
    public Docket createRestApi() {
        // 配置生成的文档信息
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(new ApiInfoBuilder().title("瑞吉外卖").version("1.0").description("瑞吉外卖接口文档").build())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.itheima.reggie.controller"))
                .paths(PathSelectors.any())
                .build();
    }
}
